This is a very thought provoking idea. Ise Jingu is the practice of rebuilding a set of famous 7th century shrines exactly every 20 years, using traditional techniques and materials, to preserve process knowledge.
Military tech might be a distracting edge-case....
And the EUV case seems almost like an opposite case - single institution more likely to protect (useful) knowledge than when it's distributed?
I think you’re getting distracted by the religious ceremonial function aspect. I think that’s irrelevant.
Utilitarian example: fishing boats in Kerala are based on an old Roman design plus Chinese origin fishing nets. Preserved design knowledge via largely oral tradition.